Answer:
compound i guessed
Explanation: Compounds are two or more elements chemically combined in definite proportions by weight. Mixtures are two or more substances not chemically combined.
<h3><u>Kupier Belt:</u></h3>
<u>Location:</u>
Kuiper belt also known as Edgeworth-Kuiper belt which is in the shape of "flat ring of icy small bodies" that revolve around the Sun beyond the orbit of the planet Neptune. It is a "circumstellar disc" that is similar to the "asteroid belt" in the outer solar system.
<u>Composition: </u>
Its composition mainly consists of "small bodies or remnants" from the time when the solar system was formed. It also consists of frozen volatiles (termed "ices"), such as "methane, ammonia, and water".
<u>Relationship to dwarf planets:</u>
This belt is also a home to the dwarf planets such as "Pluto, Haumea, and Makemake".
Answer:When two or more reactants are mixed and a change in temperature, color, etc. is noticed, a chemical reaction is probably occurring. However, these are not definite indicators.
Explanation: In a chemical reaction, there is a change in the composition of the substances. The following are indicators of chemical changes:
Change in Temperature
Change in Color
Noticeable Odor (after reaction has begun)
Formation of a Precipitate
Formation of Bubbles
I think its B but I’m not totally sure
The solution before dilution and after dilution contains same number of moles, and water is added for dilution.
Option B
<h3><u>Explanation:</u></h3>
Suppose before dilution, the solution contains x moles of KCl in Y liter of water. Now as the concentration got halved, then the solution contains x moles of KCl in 2Y kiters of solution. So the number of moles of KCl in the solution remained constant.
Again, as the solution is diluted to half of the concentration, water must have been added with the solution to make it dilute.